2.A Manual of Elementary Chemistry, Theoretical and Practical by George Fownes (1869)"They are not reddened by ferrous sulphate, and are thereby distinguished from
the pyruvates, with which they are isomerie. ..."

3.Alcoholic Fermentation by Arthur Harden (1914)"... about by yeast or dried yeast being usually without effect on the fermentation
of the pyruvates either alone or in presence of boric or arsenious acid. ..."

4.A Dictionary of Chemistry and the Allied Branches of Other Sciences by Henry Watts (1870)"They are not reddened Ъу ferrous sulphate, and are thereby distinguished from
the pyruvates. Glycerate».—Glyceric acid, though a triatomic acid, ..."

5.The Chemical News and Journal of Industrial Science (1902)"From this a very convenient method of preparing a great number of ethers of the
homologues superior to the pyruvates can be deduced. ..."